fulfill :vt.履行,实现,完成(计划等)(To bring into actuality; effect;to carry out; to complete)
如fulfilled their promises/plans.
realize:vt.认识到,了解,实现(To make real; similar to fulfill)
He finally realized his lifelong ambition to learn how to play the violin.他最终实现了他毕生的理想——学会了拉小提琴
我猜大概是realize倾向于实现梦想一类的东东,fulfill强调实现或完成某项任务或计划.
另外realize“认识到,了解”之意是fulfill不具备的.fulfill的“履行,完成”之意也是realize不具备的.
你还是查下英英字典吧.
